Typewriting machine



my 5, 1925. Y c. c. PARKER -TYPEWRITING IACHINB Filed Feb. 1, 1921 Alf/army l Patented May 5, 1925.

UNITED STATES CHARLES C. `il?.c'kIR-KIER', OF HOUSTON, TEXAS, ASSIGNOR TO UNDERWOOD TYPEWRITER COMPANY, 0F NEW YORK, N. Y.,

A CO'RPORATIQN OF DELAWARE.

TYPEWRITING MACHINE.

Application filed February 1, 1921. Serial No. 441,559.

To all whom t may concern: Beit known that I, CHARLES C. PARKER, a` citizen of the United States, residing in Houston, in the county of Harris and "State of Texas, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a specification.

This invention relates to typewriting machines, and more particularly toside-edge gaging of work sheetson a platen and to` setting margin stops, and is herein disclosed as applied to a typewriting machine having a long platen.

Heretofore, in centering on a platen work sheets of different widths, it has been customary to set the carriagein its middle position, and after determining the medial line of a work sheet of the desired width, to adjust the work sheet so that its medial line will be positioned at theprinting point, `the side-edge gage being brought into` contact with `the adjacent side `edge of thev work sheet and the margin stopsset to correspond to the desired margins on `the work sheet.

This setting of the sideedge gage and of the margin stops may then be maintained as long as a work sheet of the same width -is to be used, but in case a work sheet of another width is to be used, -it will be necessary to go through the same steps again.

According to the present invention, as soon as the proper width of work sheet is decided upon, the position of the line along which the side edge `of the work is tobe gaged is known, and the proper letter-space positions of the margin stops are also known. In carrying out the inventionprovision may be made of groups of numbers, preferably on the usual rear or delivery paper table, one number of each group corresponding to the width of a work sheet to be used. Each group may also include a number indicating the 1etterspace position at which a margin stop should be set. Each group may further include a number indicating the let-` ter-space position at which another margin `stop "should bel set. Thus by selecting lthe group of numbers containing the one corresponding to the width of the work sheet, attention would be directed to a number` indicating the letter-space position of a margin stop or to two vnumbers each indicating the letter-space position of a marginstop. It

.pose of illustration.

should be understood that, instead of la number in each group to identify the width of the sheet to be used, the sheets may be identiiied by any suitable indicia, as', vfor example, by letters.

Usually it is found desirable to center the work sheets on the platen to facilitate the writing of headings, titles and the like at the middle of the work sheets. To this end, provision may be made of means for sideedge gaging the work sheets so that they `will be centrally positioned onthe platen.

Preferably, use is made for this purpose of a side-edge gage, and the positionv of the gage for a given width of work sheet may be determined yby a mark on the paper table. As herein disclosed, such marks are rectangular in form and enclose the width-indi eating numbers, which are arranged in a line parallel to the platen axis, and the sideedge gage is provided with an opening or window which, when brought into register with one of said marks, will determine the correct position of the gage for use with a sheet of the width indicated by the number exposed through said window.

- The numbers indicating the letter-space positions of the margin stops may begrouped in various ways with the width-indicating numbers, but preferably the numbers infany one group, as referred to above, are arranged `in a column perpendicular to the `line of width-indicating numbers. In order to use the side-edge gage to advantage in connection with the preferred arrangement of thel numbers, additional windows may be pro vided so that the numbers indicating the letter-space positions of the margin stops will be exposed therethrough when the side-edge gage is positioned to expose a width-indi eating number through the corresponding window.

The figure is a plan view of my;` invention applied to so much of an Underwood typewriting machine as is necessary for the pur- The usual rotatable platen l is provided with an axle 2 journaled in the platen frame 3, which, in turn, is carried by the typewriter carriage` 5. Rotation ofthe platen l may be effected by any suitable means, as, for example, by means of linger wheels 6.

The .platen frame 3 is provided `with a rear paper table 7 to introduce work sheets y PATENT oFFlcE.

into the machine so that they may he fed by the platen to the printing point to permit printing to be effected by means of type bars 8, one of which is shown. The carriage is also provided with a pointer 9 to co-opcrate with a letter-space scale 10 mounted on a fixed portion of the frame of the machine. The scale 10 is shown as a twentyinch scale, the graduations 11 of 'which are 110- of an inch apart.

In order to limit the portion of a work sheet on which typing may be effected so as to insure the proper width of margins, provision is made of margin stops 12, which may be adjustably positioned along the letter-space scale 10. Each margin stop comprises a pointer 13 adjacent the graduations 11 on the letter-space scale and a movable handle 141, which, when pressed toward a linger rest 15, will release the margin stop and enable it to be shifted along the scale. The margin stops may be similar to those disclosed in the patentI to Broughton, No. 1,102,238, of July 7, 1914.

Provision may also be made of a sideedge gage 1G, having a main portion l17 overlying the paper table 7 and an upstanding fiange 18 against which the edge of the paper may be gaged. The side-edge gage may be similar in general to that disclosed in the patent to Garsden, No. 1,016,686, dated February 6, 1912. Obviously sideedge gages may be provided for one or both edges of the work sheets.

As herein disclosed, the invention is shown as applied to a machine in which work sheets 17 inches, 141 inches, 11 inches and 81/2 inches in width, respectively, are to be used, and in lwhich the sheets, when in use, are to be positioned substantially centrally with freference to the platen. For convenience, the

, work-sheets, which are indicated in dot-and- Adash lines on the ligure, may bedesignated by A, B, C and D, respectively, in descendingI order as to width.`

In order to determine the proper positioning of the side-edge gage 16, the paper table 7 is provided with numbers 17, 14, 11 and 81/2 y arranged in descending order from left to right along a line. parallel to the platen axis, and these numbers are so spaced as to correspond to the position of the left-hand edges of the sheets when centered in the machine. For the purpose of positioning the side-edge gage 16 in accordance with the numbers indicating the widths of the sheets, the paper table is provided preferably with rectangular marks 19 enclosing the width-indicating numbers, and the side-edge gage 16 is Vprovided with an opening or window 2O in the body portion 17 thereof so located that when the Window 20 is brought into'register with one of the rectangular marks, the upstanding flange 1S will be properly positioned to gage the side edge of a work sheet of the width indicated by the number exposed through said window 20. It will be evident that other characters than numbers may be used to indicate the sheets to be used in connection with a certain position of the side-edge gage, and different forms of marks may be used to assist in positioning the edge gage.

The margin stops 12 may be set for each width of work sheet, so as to give any desired margin at either edge, but, as shown herein, provision is made for a left-hand margin of 1 inch and a right-hand margin of 5% of an inch. The positions of the lefthand margins on the various sheets are indicated by marks 21 on the drawing, and the positions of the right-hand margins are indicated by marks 22.

It will be seen that the 17-inch work sheet corresponds to one hundred and seventy letter-spaces, and that the two margins add up to a distance corresponding to sixteen letter-spaces, making the distance of one hundred and fifty-four letter-spaces between the margins, so that the margin stops must be set one hundred and fifty-four divisions apart for use with the 17-inch sheet. It is found, therefore, that the righthand margin stop may be set at 23 and the left-hand margin stop at 177. In the same manner, it may be found that the setting of the margin stops for the lei-inch work sheet should be at 38 and 162, respectively; for the 11-inch work sheet 53 and 117, respectively; and for the Ell/finch work sheet 6G and 135, re-

spectively.

l-rccording to the present invention, the edge gage 16, when positioned to show a width-indicating` number therethrough, will also call attention to the numbers indicating the positions at which the margin stops are to be set. This may be done by providing` the paper table with numbers in lilies or rows parallel to the side-edge gage, so that each line will contain a number indicating the width of a sheet to be used and numbers indicating the positions of the margin stops. These numbers are also arranged in rowsperpendicular to the side-edge gage. The side-edge gage is also provided with additional windows 23 and 2-1, respectively, so that, when properly positioned for any width of work sheet, the number indicating such width will be exposed at one window, and the numbers indicating the positions at which the margin stops are to be set will be shown in the other two windows. In the preferred arrangement, the upper window shows the width of the sheet, the second window the position of. the right-hand margin stop, and the third window the position o f the left-hand margin stop.

Heretofore, it has been customary to center the work sheets by determining for each work sheet its center and the distance it should extend to either sidev therefrom, to adjust the work sheet centrally, and then to "position the margin stops accordingly. In

using the present invention, however, as Soon as the width `of the work sheet to be used is known, the side-edge gage is set accordingly, thereby indicating the positions of the margin stops, which may` be set accordingly without delay. It will be seen, therefore,`that by the present invention the setting of the machine for work sheets of different widths may be readily eiected.

It will be seen that, as a result of setting the margin stops 12 in accordance with the margins desired at the sides of the work sheets, the writing space of a work sheet on the platen will be centered with reference to the middle point of the scale 10 when the pointer 9 on the carriage is positioned opposite the middle graduation which, as here` in disclosed, is numbered 100, As a result of this arrangement, the proper letterspace position of the carriage for starting the typing of a heading or the like may be easily determined by ascertaining the number of letter-spaces required for the heading, dividing such number by two, subtracting the result from one hundred, and setting the carriage with the pointer opposite the graduation whose number is the saTme and, when finished, the heading will .be properly centered with reference to the writing space. This method has been described for use in a machine having on the scale 10 two hundred letter-space graduations numbered from right tolet, the middle graduation being marked 1100, but

`may be modified for use in connection with scales of other lengths.

Variations may be resorted to within the scopeof the invention, and portions of the` improvements may be used without others.

Having thus described my invention, I claim:

I. In a typewriter having a platen, a traveling carriage on which said platen is mounted, and `adjustable margin-stops to limit the movements of said carriage, in combination, a side-edge gage and an introductory paper table having arranged thereon groups of numbers, one number ol r each group indicating the width of a work sheet to be used and the vothers indicating the letter-space positions at which the margin-stops are to be set,` and a mark adjacent the first number of each group to assist in positioning said side-edge gage, the latter being vprovided with means to co-operate r `with said mark `in such positioning.

QQIn a `typewriter having a platen, a traveling carriage on` which said platen is mounted and adjustable margin-stops to Vspace positions at which the margin-stops are to be set, a character or characters identifying the work sheets to be used, and a mark, adjacent the character or characters identifying the work sheet to beused, to as'- sist in the positioning of lthe side-edge gage, the latter being cut away so that, when positioned properly with referencev to one of said groups, all of the characters of the group 'may be seen therethrough.

3. A device for indicating the position to which the side edge of a work sheet is to be gaged when feeding the same to the platen of a typewriting machine, and also indicating the letter-space positions in which the margin-stops of the typewriting machine are to be set, comprising a sideedge gage having a window therein, and a paper table having outlines thereon of the same shapeas said window but slightly smaller and so positioned that the window may be brought into register with any one of them, said outlines being spaced along a line parallel to the axis of the platen, so that the gage may be positioned to center work sheets of different widths on the platen, and having therein numbers indicating the width of the work sheet tobe used when the gage is positioned in accordance with any of said outlines.

4. A device for Vindicating the position to which the side edge of a work sheet is to be ga-ged when feeding the same to the platen of a typewriting machine, and also ,indicating the letter-space positions in which the margin-stops of the typewriting machine are to be set, comprising a side-edge gage having windows therethrough, and a paper table having outlines thereon ofi the same shape as one of said windows but slightly smaller and so positioned thatsuch window may be brought into register with any one of them, said outlinesk being spaced along a line parallel to the axis of the platen so that the gage may be positioned to center work sheets on the platen, and having therein numbers indicating the width of the work sheet to be used when the gage is positioned in accordance with any of said outlines, said paper table also having thereon numbers positioned so as to be shown through the other windows of said side-edge gage when the latter is positioned to show a number through the irst window, the last-mentioned numbers indicating the letter-space positions at which the margin-stops are to be set.

v 5. An introductory paper table for a typewriting machine having a platen, 'atraveling carriage therei'ior and adjustable margin-stops to limit the movement of the carriage, so as to insure margins of suitable width on-work sheets typed upon, provided with a longitudinal row of numbers indicating the widths of sheets to be used in l the machine and positioned so as to assist in ing carriage therefor and adjustable mar- `gin-stops to limit the movement of the carriage, soas to insure margins of suitable width on work sheets typed upon, provided with a longitudinal row ot nuinbeis indicating the widths of sheets to be used in the n machine and positioned so as to assist in positioning the side edges of the work sheets to center the latter on the platen, and two other rows of numbers parallel to ythe iii-st indicating vthe letter-space positions at which the margin-stops are to be set, the numbers in the two rows last mentioned being so arranged that upon selectinga. widthindicatingnumber, the numbers indicating the margin-stop positions may be read along a row perpendicular to the first-mentioned row, the paper table being provided fith markings associated with the width-indicating numbers and adapted to assist lin .the side-edge gaging or' the work sheets to center the same on the pla-ten. j

7. In combination, an introductory paper table for' a typewritingmachine having a platen, a traveling carriage therefor and adjustable margin-stops to limit the movement of the carriage, so as to insure margins of suitable width on work sheets typed upon, provided with a longitudinal row of numbers indicating the widths of sheets to be used in the machine and positioned so as to assist in positioning the side edges ot' the work sheets to center the latter on the platen, and two other rows ot numbers parallel to vthe first indicating the letter-space posi-,

tions at which the inargin-stops are to be set, the numbers in the two rows last-nientioiied being` so arranged that upon selecting a width-indicating number, the numbers indicating the margin-stop positions may be read along a row perpendicular to the Firstlmentioned row, and a side-edge gage having the portion overlying the paper table cut away so tha-t, when moved to proper position for a work sheet of given width, it will expose the proper width-indicating number and the numbers indicating the corresponding letter-space settings of the marginstops.

8. In a typewriting machine having a,

sheet, said gage having a series of vertically- Valigned windows therein, and an introductory paper-table displaying thereon a group ot horizontally and vertically aligned numbers arranged to bebrought into register with and observed through the gage windows, one horizontal row of said group of numbers indicating the width of a worksheet to be placed in the machine :tor typing, and the iiuinbeis appearing through the other windows indicating the letter-space positions in which the margin stops are to be set.

9. In a typewriting machine, the combination with a platen, a letter-feeding carriage, and margin-stops settable to limit the travel oli' the carriage, of a plurality of individually selectable sets oi? numbers forming a chart associated with said platen, the numbers in each set comprising one number which guides in centering a` work-sheet upon the platen, another number which `guides in positioning one of said margin-stops, and another number which guidesv in positioning the other ot said margin-stops to correspond with the sheet so centered.

10. In a typewriting machine having a platen, a lcarriage on which said platen is mounted, adjustable margin-stops for limiting the travel of the carriage, a paper-shelf having displayed thereon a chart including a series ot sheet-centering marks for different widths ot work-sheets to be used in the machine, said chart also including a second series of marks for setting the inargin-stops to lbe used with each of said widths, and a paper-guide adjustable on the paper-shelt said guide when positioned for any width of work-sheet co-operating automatically with said second series of marks, to select the corresponding settings for the margin-stops.

ll. In a typewriting machine having a platen, a carriage on which said platen is mounted, adjustable margin-stops, and a paper-shellLl adjacent the platen and having displayed thereon a ychart including a series of sheet-centering numbers for ditferent widths oi work-sheets to be used in the machine, said chart also including a series of numbers representing letter-space positions 'for setting' the margin-stops to be used with each of said widths, said numbers being so grouped with relation to one another that upon selecting a number indicating a` certain width of work-sheet, the numbers representing the margin-stop settings for that parllO ticular Width of Work-sheet are selected therewith.

12. In a typewriting machine having a platen, Worksheet-positioning means comprising a chart including a set of sheet-cen tering marks for diiferent Widths of Worksheets to be used in the machine, and a number associated With each of said marks showing the Width of Worksheet centered thereby, the numbers being arranged in a straight line in letter-feeding direction.

13. In a typewriting machine having a platen, means for positioning Worksheets of any one of a plurality of diiferent Widths in centered position with reference to the platen, said positioning means including an adjustable side-edge guide, a paper-shelf having displayed thereon a chart comprising `a set of marks With which the guide may be brought into register for each different Width of Worksheet to be used, and a number associated with each of said marks, identijt'ying the Width of Work-sheet centered thereby. i

111. In a typewriting machine having a platen, a carriage on which said platen is mounted, adjustable margin-stops for limiting the travel of the carriage, a paper-shelf having displayed thereon a chart comprising a set of sheet-centering numbers for diderent Widths of Work-sheets to be typed upon, said sheet-centering numbers extending in letterfeeding direction across the chart, and other sets ot numbers associated in pairs for setting the margin-stops to be used With each` of said Widths, the numbers comprising said pairs disposed in a straight line in descend ing order from the corresponding sheetfeen tering numbers.

CHARLES C. PARKER.

Witnesses J. A.I-IARDER, J. Esnnnz. 

